Embroidering-machine.



I. A. GROEBLI. EMBROIDBBJNG MACHINE.

APPLICATION FILED 00125, 1910.

Patnted Jan. 5, 1915 wi/imwoo/a HE NORRIS PETERS U),PHOTO-1 .ITH". WASHINGTON. D. F

JOSEPH A. GROEBLI, OF NEW YORK, N. Y.

EMBBOIDERING-MACHINE.

Specification of Letters Patent.

Patented Jan. 5, 1915..

Application filed October 25, 1910. Serial No. 588,941.

To all whom it may concern:

Be it known that I, JOSEPH A. GRonBLI, a citizen of the United States, and a resident of the city, county, and State of New York, have invented certain new and useful Improvements in Embroidering-Machines, of which the following is a specification.

The present invention relates to the mechanism through which the operations of a jacquard are transmitted to the tambour frame of embroidering machines.

In the large form of embroidering machine, wherein several hundred needles opcrate simultaneously, the fabric is held on a movable tambour frame and this frame is moved after each needle stroke to various positions and the embroidered design produced by the stitching operations is determined by the movements of the tambour frame. The tambour frame operates in a vertical plane and its movements must necessarily be almost perfectly controlled, since the movement of the tambour frame for any given stitch is usually but a small fraction of an inch and the weight of the tambour frame runs up to 1000 pounds. There are several ways of moving the tambour frame, but my present invention relates to the operation thereof by means of a jacquard or automat which automatically controls the movements of the tambour frame, and produces movements therein in any direction in the vertical plane of operation. A jacquard for controllingthe operation of the embroidering machine is shown and described in U.

S. Letters Patent to me dated November 6, 1894:, and numbered 528,682, and cross reference will be made to that patent throughout this case.

In order to move the tambour frame in almost any direction there are two movement initiated in the jacquard one of which is translated into say a horizontal movement in the tambour frame and the other into say a vertical movement and these will cause either a horizontal movement to the left or right; a vertical movement up or down; or by combining the two movements in various combinations the resultant of both will move the frame in various oblique positions.

The present invention relates to the mechanism for imparting the jacquard movements to the tambour frame and my object is to provide a very simple 'mechanism wherein the number of parts will be small ments to the tambour frame, but they have generally been complicated, embodying a number of working parts wherein much of the movement is lost and they did not provide for a wide amplitude of movement with the use of minimum power; With the heavy tambour frames necessarily used the j acquard movement must be applied as direct as possible to the tambour frame to make the work of the jacquard as'light as possible and this is accomplished in the present device.

In the drawings forming a part of this application, the figure is a perspective view of a tambour frame and my improved operating mechanism.

In a jacquard for operating embroidering machines there are two movements produced as previously stated and these movements are ultimately carried, in so far as the jacquard proper is concerned, usually to two sliding rack bars, and I shall therefore describe my invention as applied to such a jacquard though my invention is not necessarily limited to such an application.

In the jacquard shown in said Letters Patent 528,632, there is suitable mechanism for operating the rack bars 03, and e, individually of each other, either to the right or left and the present mechanism is adapted to transmit the movements of these bars (or their equivalent in the case of some other form of jacquard) to the tambour frame of the embroidering machine whereby there will be but few parts employed and whereby the amplitude of movement may be greater than in the device for such purpose as shown in the said patent.

In the present drawing I have shown the tambour frame 1, which carries a fabric 2 and the particular means for fastening and reeling the fabric on the tambour frame forms no part of my present invention and the same are therefore not here shown. For the purpose of clearly showing the present invention in the simplest manner I have omitted the greater part of the machine' frame and the guides for vertically guiding the tambour frame as these are all well known in the art. I have also shown only so much of the jacquard as will be necessary, when viewed in connection with the said Letters Patent, to teach the application of my invention. I have shown two rack bars 3 and t which have racks 5 and 6. The two shafts 7 and 8 operate the bars 3 and 4: to the right or left through the pinions 9 and 10. The rack bars 3 and 4: may be said to be the elements by which the operating movements for the tambour frame emerge from the jacquard. The bars 3 and 4 are intended to take the same place as the bars cl, and e, of the said patent and to be operated in the same manner and by the same mechanism. These bars are operated either to the right or to the left, the extent of movement being controlled from the acquard card and one may be moved while the other remains stationary and so on, the same as in said patent.

One of the slide bars transmits its movement, directly to the tambour frame while the other transmits its movement thereto through an angle lever, whereby the move ment of the latter one will affect the tambour frame in 'a different direction and it is the simplicity and effectiveness of this arrangement of the transmission which forms the'novelty of the present device.

I have shown the bar 3 directly acting upon the tambour frame 1, to produce the longitudinal movement of the tambour frame. On one end of this bar 3 I have provided a pin 11 at right angles thereto which enters the slot 12 preferably at one end of the tambour frame, which slot I have shown vertically disposed, or at right angles to the movement of the bar 3. WVhile the bar 3 thus moves the tambour frame longitudinally the slot permits the tambour frame to be moved vertically, independently thereof. The other bar 4 transmits its movement to the tambour frame through an angle lever whereby the movement is converted from a longitudinal into a vertical one. I have shown the rod 1 connected by a pin 13 with an angle lever 14: which fulcrums at 15 from a beam 20 of the embroidering machine frame. The lever 14 is provided with a roller 16 on its horizontal arm which, together with other arms, such as 18, fulcruming at 19, support the tambour frame. The upper ends of the levers are connected by a rod 22, whereby the levers move in unison and preserve parallelism in the tambour frame movement. I have shown the lever 14 provided with an extension 21, which car- "moved longitudinally thereby, and regardless of whether 'it is being moved vertically at the same time. Thus the longitudinal movement of the tambour frame is produced by a direct connection with the tambour frame and no modification of the present jacquard construction will be necessary. lVhen the bar 4: is moved to the right or left the movement is converted by the angle lever 14:, whereby it will operate to move the tambour frame up and down in a vertical direction which will not interfere with its longitudinal movement. The tambour frame may thus be moved vertically or horizontally, or by the resultant of the two devices, in any intermediate direction. I have shown the angle lever by which one of the jacquard movements is transmitted to the tambour frame as forming a part of the counterbalancing and parallel motion mechanisms and I consider this a material advantage, but my invention in its broader aspect is not limited to this particular adaptation.

It will be apparent that one of the movements of the jacquard is transmitted directly to the tambour frame while the other is transmitted by an angle lever and by direct means I mean that the movement is produced without complicated intermediate mechanism which will change the direction of motion, or so complicate the movement as to reduce the efficiency by lost motion. The slide bars may be placed parallel and close to each other as heretofore and in fact the jacquard requires no modification.

The present device permits a greater amplitude of movement of the tambour frame and by applying the two movements separately the frame is operated more positively and accurately. By transmitting one of the movements through part of the counterbalancing mechanism the whole device is simplified and by the combining of the parallel motion and transmission devices the transmission device is made more effective.

Having described my invention what I claim is;

1. In an embroidering machine, the combination of a movable tambour frame, a reciprocating element arranged to reciprocate in substantially a straight line and to be operated by a jacquard and being directly connected with the tambour frame whereby said reciprocating element will impart movements to the tambour frame in its direction of movement, said connection permitting the tambour frame to be moved at an angle to the movement caused by said reciprocating element, an angle lever arranged to move the tambour frame at an angle to the movement imparted by said reciprocating element and a second reclprocating element arranged to be operated by a jacquard and to operate saldangle lever, both of said reciprocating-elements operating in the same directio 2. In an embroidering machine, the combination of a movable tambour frame, a reciprocating element arranged to reciprocate in substantially a straight line and to be operated by a jacquard and being directly connected with the tambour frame whereby the said reciprocating element will impart movements to the tambour frame in its direction of movement, said connection permitting the tambour frame to be moved at an angle to the movement caused by said reciprocating element, an angle lever arranged to move the tambour frame at an angle to the movement imparted by said reciprocating element, a second reciprocating element arranged to be operated by the jacquard and to operate said angle lever, both said reciprocating elements operating in the same direction, and a parallel motion device for controlling the movements of the tambour frame, said angle lever forming a part of said parallel motion device.

3. In an embroidering machine, the combination of a movable tambour frame, and means for imparting jacquard movements thereto, comprising a direct reciprocating element arranged tobe operated by a jacquard and connected with the tambour frame whereby its reciprocating movements will be imparted direct to the tambour frame, said tambour frame having a slot arranged at right angles to the movements of said reciprocating element and the latter having means engaging in said slot, and a second reciprocating element arranged to be operated by a jacquard and an angle lever arranged to impart the movements of said second reciprocating element to the tambour frame at right angles to the movements caused by said first reciprocating element and connected with said tambour frame whereby the movements of said first reciprocating element may be imparted to the tambour frame simultaneously with the movements caused by said lever.

4:. In an embroidering machine, the combination of a movable tambour frame, a reciprocating element arranged to be operated by a jacquard and directly connecting the jacquard with said tambour frame whereby reciprocating movements will be imparted to the tambour frame, said connection being such as will permit the tambour frame to be moved at an angle to the movement caused by said reciprocating element, angle levers arranged to operate on said tambour frame at difierent places along its length, said angle levers being arranged to move the tambour frame at an angle to the movement imparted by said reciprocating element, means connecting said levers to cause them to 0perate in unison whereby the tambour frame will be moved in parallelism by said levers, and means for counterbalancing the tambour frame through said levers, and a second reciprocating element arranged to be operated by a jacquard and to operate said levers, said last reciprocating member and said angle levers connecting the jacquard and tambour frame directly whereby the movements will be imparted to the tambour frame.

Signed in the city, county, and State of New York, this 24th day of October, 1910.

JOSEPH A. GROEBLI.

Witnesses:

WVM. H. MAUTNER, JAMES A. CRAIG.

maples of this patent may be obtained for five cents each, by addressing the Commissioner of Patemtm,

on, r. W. 

